Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein: a is 1 to 3; b is 0 to 2; c is 2 to 4; d is 1 to 5; X is sulphur, oxygen or --CH.sub.2 --; Y is oxygen, sulphur, NR.sub.4 or CHR.sub.5 wherein R.sub.4 is hydrogen, C.sub.1-4 alkyl, NO.sub.2 or CN, C.sub.1-4 alkylsulphonyl or phenylsulphonyl optionally substituted in the phenyl moiety by one or two substituents selected from C.sub.1-4 alkyl, C.sub.1-4 alkoxy, fluorine, chlorine or bromine, and R.sub.5 is NO.sub.2, C.sub.1-4 alkylsulphonyl or optionally substituted phenylsulphonyl as defined for R.sub.4 ; R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-4 alkyl, or C.sub.3-6 cycloalkyl; or R.sub.1 and R.sub.2 taken together with the nitrogen to which they are attached represent a pyrrolidino or piperidino ring; R.sub.6 and R.sub.7 are independently hydrogen or C.sub.1-6 alkyl; and Ar is furan or thiophene attached at positions 2- and 5- or benzene attached at positions 1- and 3- or 1- and 4-, having useful pharmacological activity, processes for their preparation and their use.
式(I)的化合物及其药学上可接受的盐:##STR1##
其中:a为1至3;b为0至2;c为2至4;d为1至5;X为
硫、氧或--CH.sub.2 --;Y为氧、
硫、NR.sub.4或CHR.sub.5,其中R.sub.4为氢、C.sub.1-4烷基、NO.sub.2或CN、C.sub.1-4烷基磺酰基或苯基磺酰基,在苯基中选择一个或两个取代基,所述取代基选择自C.sub.1-4烷基、C.sub.1-4烷氧基、
氟、
氯或
溴,而R.sub.5为NO.sub.2、C.sub.1-4烷基磺酰基或按R.sub.4定义的可选择取代的苯基磺酰基;R.sub.1和R.sub.2独立地为氢、C.sub.1-4烷基或C.sub.3-6环烷基;或R.sub.1和R.sub.2与它们所附着的氮一起代表
吡咯烷基或
哌嗪烷基;R.sub.6和R.sub.7独立地为氢或C.sub.1-6烷基;Ar为
呋喃或
噻吩,附着在2-和5-位,或苯附着在1-和3-或1-和4-位,具有有用的药理活性,其制备方法及其用途。